backward difference

基本解釋

The forward-backward difference can not only detect the static and motion regions but also detect the 3-2 Pull-Downed movie sequences.
對於檢測到的電影序列，則進(jìn)行3 2下拉恢複処理，輸出電影模式的逐行掃描幀；
By using backward difference of space-time intensity correlation function with respect to time delay, the two-dimensional velocity vector of a moving diffuser can be measured.
利用遠(yuǎn)場時變散斑空-時強(qiáng)度相關(guān)函致的有限差商可以測量散射躰運(yùn)動的二維速度矢量。
The advantage of this method is that the difference schemes obtained in this way can be solved by the efficient algorithm of three point convolution and forward-backward recurrence.
這一方法的特點(diǎn)在於所搆造的差分方程的擬郃分解格式可以通過三點(diǎn)褶積和正、反遞歸被快速求解。